Ribbon burner



Patented Dec.p 2, 1930 UNITED Asrpxrrss APATENT OFFICE GARNET W. MCKEE, F BOCKFOBD, ILLINOIS RIBBON BURNER Application led July 11,

The present invention relates to gas burners adapted to give a ribbon flame. p

Burners of this general type are commonly used in bake ovens, or in other ovens having surfaces of large areas which are to be A heated uniformly. To provide the ribbon flame, the burner is constructed out of a long closed burner tube having a longitudinal series of closely spaced gas ports. Preferably,

this series of ports is formed by providing a narrow longitudinal slot in one side of the burner tube,and\tting a laterally corru ated plate tightly in the slot in contact wit the sides thereof. The spaces between corrgations and the sides of the slot constitute the orts or-the jet passages for the gas in the urner tube.

The above construction in use has certain disadvantages,particularly where the burner tubes are long. Thus, when the tube becomes to that the latter may slip into the tube or at least become displaced in the slot. Loosening of the strip may also cause the ports or jet passages to become indistinct, thereby resultmg in an uneven iiame. Another disadvantage is that the gas entering 'at one end of the tube is distributed unequally to the jet passages, thereby resulting in an uneven ame and hence in uneven heating of the oven. I

The primary object of thejpresent invention therefore resides in the provision of a new and improved construction in which the sidesyof the slot are held against separating L from the plate, and in which the plate is held securely in position.

A. further object resides in the rovision in a burner of the above character o a burner tube which is less subject to expansion and deformation thanheretofore.l

Another object is to provide a novel rib-` bon burner 'having means for causing an egual or any desired invariable distribution 0 bgas throughout the length of the burner Still another object resides in the provision 1927. Serial No. 204,984.

of means for causing any desired distribution of gas, which means serves to strengthen the urner tube against expansion and deformation.

A general object is to provide a novel burner of the above character which is sim le and Further objects and advantages will become apparent as the description proceeds.

In the accompanying drawings: Figure 1 is a view iur-elevation of a ribbon burner embodying features of my invention. Fig. 2 is a transverse sectional view taken g along line 2--2 of Fig. 1.

Fig. 3 is af transverse nsectional View of a modiied form of my invention.

Fig.- 4 is a transverse sectional view of another modified form of my invention.

Fi 5 is a fragmentary longitudinal sectiona view taken along the broken line 5 5 of Fig. 3.

Wlulelthe invention is susceptible -of various modifications and alternative constructions, I have shown in thedrawings andV will herein describe 'in detail the preferred embodiment, but it is to be understood that I do not thereby intend to limit the inven- `tion'to the specific formd disclosed, but intend to cover all modifications and alternative 4constructions fallin within the spirit linexpensive in construction, and whic is efflclent, safe and long lived 1n use.

and scope of the inventlon as expressed in K the a pended claims. A Re rring to thedrawings, the exemplary 4form of my invention comprises an elongated hollow burner tube 10.. Of this tube, one end is tightly closed in any suitable manner,`

as by means of an end cap 11, and the other end is adapted to be connected to asuitable gas supply means (not shown).

Formed in one side ofthe tube 10, preferabl in a milling operation, and terminating s ightl short of the ends of thejtube is a narrow ongitudinal slot 12. A suitable strip 13 'which is corrugated laterally and which is coextensive in length With the slot 12 is tted tightly therein, and with the sides of the slot forms a series of closely spaced ports ori jet assages 14 longitudinally of the tube. Gas rom the tube 10 passes through these jet passages for ignition along the tube.

To prevent the sides of the slot 12 from moving away from the strip 13 through peripheral expansion of the tube 10, I provide a plurality of rivets 15 extending through said tube at spaced points and laterally of the slot. Preferably I also provide a tube of extra heavy material (see Fig. 2) Each rivet 15 has a head 16 in one end fitting in a countersunk bore 17, and is riveted at the other end as shown at 18 in a countersunk bore 19. By countersinking the outer ends of the bores 17 and 19 to receive the head 16 and the riveted end 18, leakage from the tube 10 through said bores is etfectually prevented.

To hold the strip 13 positively against displacement in the slot 12, the strip is made of a width to extend a substantial distance into the tube 10. In Figs. 2 and 4, the strip 13 extends a short though substantial distance beyond the center of the tube 10. In Fig. 3, the strip 13 extends completel across the tube 10, and the inner edge of t e strip' preferably sets in a shallow notch 20 cut longitudinally in the inner surface of the tube and diametrically opposite to the slot 12. The rivets 15 extend through the strip 13, and serve to hold the latter in position. The strip 13 also serves to divide 'the iow of gas in the tube 10 to the jet passages 14, and thereby improves the distribution of the In Figs. 3, 4 and 5, I have shown a form of my invention comprising a relatively large outer tube 21 which is closed at one end an which is adapted to be connected at the other end to a vsuitable source ozt gas supply (not shown) A relatively wide slot 22 is formed, preferably b a milling operation, in one side of the tube 21 and longitudinally thereof. This slot 22 terminates slightl short of the ends of the tube 21. In this orm of my invention, the tube 10 is closed at both ends as by means of plugs 23, and is positioned inside of the tube 21 with the slot 12 disposed centrally of the slot 22. The slot 22 is coextensive in length with the tube 10. The -sides of the slot 22 are rigidly secured to the outside of the tube 10, as by means of welding, indicated at 24. A plurality of openings or ports 25 are formed in the walls of the tube 10 inside of the tube 21 for the passage of gas. Preferably these openings are arranged in two series longitudinally of the tube 10, and respectively atl opposite sides of the strip 13. The openings 25 may beformed in any manner along the tube 10 to obtain any desired distribution of gas low from the tube 21 to the jet passagesL 14. In this form of my invention, the rivets 15 need not have a countersunk head since a small escape of gas into the tube 21 is ofy little consequence. Y

It will be evident that I have provided a ribbon burner in which the strip 13 forming the jet passages is held securely in position. Any desired distribution of gas can be provided for.

I claim as my invention:

1. A gas burner having in combination an outer burner tube closed at one end and adapted to receive gas at the other end, said tube being formed longitudinally in one side with a slot substantially coextensive in length therewith, an inner burner tube disposed in said outer tube and substantially coextensive in length with said slot, said inner tube being formed in one side with a longitudinal slot in register with said first mentioned slot, the e ves of said first mentioned slot being rigidly secured to said`inner tube, a strip member forming jet passages in said last mentioned slot and extending a substantial distance into said inner tube, means for rigidly securing said member in position, and a plurality of spaced openings in said inner tube and at opposite sides of said member communicating with the interior of said outer tube.

2. A as burner having in combination, an outer tu e adapted to receive gas and formed with an `elongated slot in one side thereof, an inner tube disposed in said outer tube and formed with an elongated slot in one side thereof in register with said first mentioned slot, the side edges of said irst mentioned slot being secured to said inner tube, a strip member disposed in said last mentioned slot and forming jet passages therewith, means for securing said strip member in-osition, f

and a plurality of openings forme in and along said inner tube and opening into said outer tube.

3. A gas burner having in combination, an outer tube adapted to receive gas, an inner tube disposed in said outer tube and secured to one side thereof, said tubes being formed with registering openings, means secured in the opening in said inner tube defining a' plurality of jet passages, said means extending substantially into said inner tube, and openings in said inner tube opening into said outer tube.

4. A gas burner having in combination, a burner tube adapted to receive gas, said tube being formed with a lon tudinal slot in one side thereof, a strip fittlng in said slot and defining a plurality of jet passages, said strip extending diametrically across said tubes, and means extending laterally through said tube and said strip for holding said 'strip rigidly in positio i 5. A gas urner having in combination, a burner tube adapted to receive gas, said tube being formed in one side with a longitudinal elongated slot, and a strip tti'ng snugly in said slot to define a plurality of jet passages,

said strip extending into said tube to the opposite inner wall thereof.

6. A gas burner having, in combination, a hollow elongated burner member adapted to receive gas, said member being formed with a longitudinal slot, means fitting in said slot and ening a plurality of jet passages, sai means extending diametricall across said member, and means extending 4laterally A through said member and said first mentioned means for holding said first mentioned means v in position.

7. A gas burner having, in combination, an outer member adapted to receive 'gas and formed with an elon ated slot, an inner member disposed in sa1d outer member and formed with an elongated slot registry with said first mentionedslot, the side edges of said first mentioned slot having a iluid tight connection with said inner member, means disposed in said last mentioned slot and forming a pluralit of spaced jet passages therewith, means or securing said iirstl mentioned means in position, and a plurality of o enings formed `in said inner member and esta lishing communication between the interiors of said members. v 8. A gas burner comprising, in combination, a hollow burner member adapted to receive' gas, said member being formed with an elongated slot in one side, means in said slot defining a plurality. of jetv passages, said means extending lateral] into said member 3o beyond the center thereo and a plurality of spaced tie members extending laterally substantially through the center of said membe and through said means. l 9. A gas burner comprising, in combination, a burner tube, said tube being formed with a longitudinal slot, means in said -slot defining a plurality of jet passages said means extending laterally into said tu e be yond the center thereof, and a plurality of` 40 Vspaced tie members perpendicular to said means and extending diametrically through said tube and through said means.

In testimony whereof, I have hereunto aflixed my signature. GARNET W. MQKEE. 

